EP0118708B1 - Matériau de contact fritté pour appareillages interrupteurs à basse tension - Google Patents

Matériau de contact fritté pour appareillages interrupteurs à basse tension Download PDF

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Publication number
EP0118708B1
EP0118708B1 EP84100927A EP84100927A EP0118708B1 EP 0118708 B1 EP0118708 B1 EP 0118708B1 EP 84100927 A EP84100927 A EP 84100927A EP 84100927 A EP84100927 A EP 84100927A EP 0118708 B1 EP0118708 B1 EP 0118708B1
Authority
EP
European Patent Office
Prior art keywords
mass content
cdo
contact material
contact
content
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
EP84100927A
Other languages
German (de)
English (en)
Other versions
EP0118708A1 (fr
Inventor
Horst Prof. Dr. Schreiner
Bernhard Rothkegel
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Siemens AG
Original Assignee
Siemens AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
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First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=6190546&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0118708(B1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Siemens AG filed Critical Siemens AG
Priority to AT84100927T priority Critical patent/ATE24628T1/de
Publication of EP0118708A1 publication Critical patent/EP0118708A1/fr
Application granted granted Critical
Publication of EP0118708B1 publication Critical patent/EP0118708B1/fr
Expired legal-status Critical Current

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Classifications

    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C32/00—Non-ferrous alloys containing at least 5% by weight but less than 50% by weight of oxides, carbides, borides, nitrides, silicides or other metal compounds, e.g. oxynitrides, sulfides, whether added as such or formed in situ
    • C22C32/001—Non-ferrous alloys containing at least 5% by weight but less than 50% by weight of oxides, carbides, borides, nitrides, silicides or other metal compounds, e.g. oxynitrides, sulfides, whether added as such or formed in situ with only oxides
    • C22C32/0015—Non-ferrous alloys containing at least 5% by weight but less than 50% by weight of oxides, carbides, borides, nitrides, silicides or other metal compounds, e.g. oxynitrides, sulfides, whether added as such or formed in situ with only oxides with only single oxides as main non-metallic constituents
    • C22C32/0021—Matrix based on noble metals, Cu or alloys thereof
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H1/00—Contacts
    • H01H1/02—Contacts characterised by the material thereof
    • H01H1/021—Composite material
    • H01H1/023—Composite material having a noble metal as the basic material
    • H01H1/0237—Composite material having a noble metal as the basic material and containing oxides
    • H01H1/02372—Composite material having a noble metal as the basic material and containing oxides containing as major components one or more oxides of the following elements only: Cd, Sn, Zn, In, Bi, Sb or Te
    • H01H1/02376—Composite material having a noble metal as the basic material and containing oxides containing as major components one or more oxides of the following elements only: Cd, Sn, Zn, In, Bi, Sb or Te containing as major component SnO2
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F9/00—Making metallic powder or suspensions thereof
    • B22F9/02—Making metallic powder or suspensions thereof using physical processes
    • B22F9/06—Making metallic powder or suspensions thereof using physical processes starting from liquid material
    • B22F9/08—Making metallic powder or suspensions thereof using physical processes starting from liquid material by casting, e.g. through sieves or in water, by atomising or spraying
    • B22F9/082—Making metallic powder or suspensions thereof using physical processes starting from liquid material by casting, e.g. through sieves or in water, by atomising or spraying atomising using a fluid
    • B22F2009/0824—Making metallic powder or suspensions thereof using physical processes starting from liquid material by casting, e.g. through sieves or in water, by atomising or spraying atomising using a fluid with a specific atomising fluid
    • B22F2009/0828—Making metallic powder or suspensions thereof using physical processes starting from liquid material by casting, e.g. through sieves or in water, by atomising or spraying atomising using a fluid with a specific atomising fluid with water
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F2998/00—Supplementary information concerning processes or compositions relating to powder metallurgy
    • B22F2998/10—Processes characterised by the sequence of their steps

Definitions

  • the invention relates to a contact material for low-voltage switchgear in power engineering based on AgSn0 2 with further metal oxide additives.
  • contact materials based on AgCdO with CdO as the main active component have proven to be particularly advantageous. These contact materials show a small erosion in the arc, a low welding force and a low heating with continuous current supply.
  • a contact material is known from GB-A-20 55 398. by oxidation of a plated alloy sheet with 3 to 15% by weight of tin. 0.01 to 1% by weight bismuth and 0.1 to 8.5% by weight Cu is produced.
  • DE-A-27 54 335 discloses an electrical contact material based on silver metal oxide, in which 1.5 to 6% by weight bismuth oxide and 0.1 to 6% by weight tin oxide, based on the total amount of oxide, are present should be.
  • copper oxide or zinc oxide can also be present, but bismuth oxide and tin oxide always dominate and are of the same order of magnitude.
  • the object is achieved in that the material as sintered material consists of AgSnO 2 Bi 2 O 3 CuOCdO and that the total metal oxide content is between 10 and 25 vol .-% with a SnO 2 content ⁇ 70 vol .-% of the total amount of oxide and with a Bi 2 0 3 content between 0.5 and 2% mass content, a CuO content between 0.5 and 1.5% mass content and a CdO content between 0.05 and 2% mass content.
  • a first material according to the invention can have an Ag mass content of 87.89%, an SnO 2 mass content of 9.92%, a Bi 2 0 3 mass content of 1.1%, a CuO mass content of 1.2% and a CdO Mass content of 0.3% and a second material according to the invention an Ag mass content of 81.42%, an SnO z mass content of 13.09%, a Bi 2 O 3 mass content of 2.0%, a CuO mass content of 1.5 % and a CdO mass content of 2.0%.
  • Molded bodies are compacted from the dried powder mixture with 300 MPa.
  • a second powder layer e.g. B. from pure silver to a two-layer compact. Sintering takes place at 850 ° C for one hour in air.
  • the contact pieces are compacted by hot pressing at 650 ° C with 800 MPa. To achieve a further heat treatment at 850 ° C for half an hour in air or nitrogen and a subsequent further cold or warm compression.
  • An alloy of AgSnBiCuCd with 90.06% mass content Ag, 7.67% mass content Sn, 1.01% mass content Bi, 0.98% mass content Cu and 0.27% mass content Cd becomes a particle size powder ⁇ 200 ⁇ , e.g. B. produced by pressure atomization with water.
  • a composite powder made of AgSnO 2 Bi 2 O 3 CuOCdO with 87.89% mass content Ag, 9.92% mass content Sn0 2 , 1.1% mass content Bi 2 O 3 , 1.2% mass content CuO and 0.3 % Mass content of CdO obtained.
  • the internal oxidation is during a Annealing treatment carried out in air between 500 and 800 ° C.
  • a two-layer powder compact is produced from the composite powder as in Example 1.
  • the compact is solidified by sintering and the residual porosity of the contact piece is reduced by hot or cold post-compression.
  • the contact quality achieved in this way also has the same good contact properties with the same composition as in Example 1.
  • a micrograph shows the uniform globular oxide deposits in the silver base metal.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Composite Materials (AREA)
  • Contacts (AREA)
  • Powder Metallurgy (AREA)
  • Manufacture Of Switches (AREA)
  • Conductive Materials (AREA)
  • Mechanisms For Operating Contacts (AREA)

Claims (4)

1. Matériau pour contacts à base d'AgSn02 avec d'autres additions d'oxydes métalliques, pour des appareillages électriques basse tension de la technique des courants forts, caractérisé en ce qu'il est formé d'un matériau fritté en AgS- nO2Bi2O3CuOCdO et que la teneur totale en oxydes métalliques est comprise entre 10 et 25 % en volume, avec une fraction de SnO2 ≥ 70 % en volume de la quantité totale d'oxydes et avec une fraction de Bi203 représentant une teneur massique comprise entre 0,5 et 2 %, une fraction de CuO représentant une teneur massique comprise entre 0,5 et 1,5 % et une fraction de CdO représentant une teneur massique comprise entre 0,05 et 2%.
2. Matériau selon la revendication 1, caractérisé en ce que la teneur totale en oxydes métalliques est de 15 à 20 % en volume.
3. Matériau selon la revendication 2, caractérisé en ce qu'il présente une teneur massique en Ag de 87,89 %, une teneur massique en SnO2 de 9,92 %, une teneur massique en Bi2O3 de 1,1 %. une teneur massique en CuO de 1,2 % et une teneur massique en CdO de 0,3 %.
4. Matériau selon la revendication 2, caractérisé en ce qu'il présente une teneur massique en Ag de 81,42 %, une teneur massique en SnO2 de 13,09 %, une teneur massique en Bi2O3 de 2 %. une teneur massique en CuO de 1.5% et une teneur massique en CdO de 2 %.
EP84100927A 1983-02-10 1984-01-30 Matériau de contact fritté pour appareillages interrupteurs à basse tension Expired EP0118708B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT84100927T ATE24628T1 (de) 1983-02-10 1984-01-30 Sinterkontaktwerkstoff fuer niederspannungsschaltgeraete.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3304637 1983-02-10
DE19833304637 DE3304637A1 (de) 1983-02-10 1983-02-10 Sinterkontaktwerkstoff fuer niederspannungsschaltgeraete

Related Child Applications (1)

Application Number Title Priority Date Filing Date
EP85114864.3 Division-Into 1984-01-30

Publications (2)

Publication Number Publication Date
EP0118708A1 EP0118708A1 (fr) 1984-09-19
EP0118708B1 true EP0118708B1 (fr) 1986-12-30

Family

ID=6190546

Family Applications (2)

Application Number Title Priority Date Filing Date
EP84100927A Expired EP0118708B1 (fr) 1983-02-10 1984-01-30 Matériau de contact fritté pour appareillages interrupteurs à basse tension
EP85114864A Expired - Lifetime EP0182386B1 (fr) 1983-02-10 1984-01-30 Procédé de fabrication de pièces de contact

Family Applications After (1)

Application Number Title Priority Date Filing Date
EP85114864A Expired - Lifetime EP0182386B1 (fr) 1983-02-10 1984-01-30 Procédé de fabrication de pièces de contact

Country Status (5)

Country Link
US (1) US4681702A (fr)
EP (2) EP0118708B1 (fr)
JP (1) JPS59148215A (fr)
AT (2) ATE24628T1 (fr)
DE (3) DE3304637A1 (fr)

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3421758A1 (de) * 1984-06-12 1985-12-12 Siemens AG, 1000 Berlin und 8000 München Sinterkontaktwerkstoff fuer niederspannungsschaltgeraete der energietechnik und verfahren zu dessen herstellung
JPH06104873B2 (ja) * 1986-07-08 1994-12-21 富士電機株式会社 銀―金属酸化物系接点用材料及びその製造方法
WO1989009478A1 (fr) * 1988-03-26 1989-10-05 Doduco Gmbh + Co. Dr. Eugen Dürrwächter Produit semi-fini pour contacts electriques, constitue d'un materiau composite a base d'argent et d'oxyde d'etain, et procede de metallurgie des poudres pour sa fabrication
EP0369282B1 (fr) * 1988-11-17 1995-06-14 Siemens Aktiengesellschaft Matériau de contact fritté dans appareillages interrupteurs à basse tension de la technique de l'énergie, spécialement pour des contacteurs
EP0369283B1 (fr) * 1988-11-17 1994-09-14 Siemens Aktiengesellschaft Matériau de contact fritté pour appareillages interrupteurs à basse tension de la technique de l'énergie, spécialement pour des contacteurs
FR2639466B1 (fr) * 1988-11-22 1991-02-15 Telemecanique Procede de preparation d'un materiau de contact electrique et procede de fabrication d'un element de contact incorporant un tel materiau
US4952353A (en) * 1989-12-28 1990-08-28 Gte Laboratories Incorporated Hot isostatic pressing
EP0645049B1 (fr) * 1992-06-10 1996-04-03 DODUCO GMBH + Co Dr. Eugen DÀ¼rrwächter Matiere pour contacts electriques a base d'oxyde d'etain et d'argent ou d'oxyde de zinc et d'argent
DE19503182C1 (de) * 1995-02-01 1996-05-15 Degussa Sinterwerkstoff auf der Basis Silber-Zinnoxid für elektrische Kontakte und Verfahren zu dessen Herstellung
JP4892327B2 (ja) * 2006-11-29 2012-03-07 株式会社富士機械工作所 管体切断装置及び管体切断方法
DE102008056263A1 (de) 2008-11-06 2010-05-27 Ami Doduco Gmbh Verfahren zur Herstellung eines Halbzeugs und Halbzeug für elektrische Kontakte sowie Kontaktstück
DE102008056264A1 (de) 2008-11-06 2010-05-27 Ami Doduco Gmbh Verfahren zur Herstellung eines Halbzeugs und Halbzeug für elektrische Kontakte sowie Kontaktstück
CN104498764A (zh) * 2014-12-31 2015-04-08 靖江市海源有色金属材料有限公司 一种电接触材料及制备方法
EP3116009B1 (fr) * 2015-07-07 2019-08-28 Siemens Aktiengesellschaft Procédé pour la fabrication d'un contact électrique

Family Cites Families (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH588152A5 (fr) * 1972-12-11 1977-05-31 Siemens Ag
JPS50123519A (fr) * 1974-02-12 1975-09-29
GB1507854A (en) * 1974-04-01 1978-04-19 Mallory & Co Inc P R Electric contact materials
JPS51121795A (en) * 1975-04-17 1976-10-25 Nippon Tungsten Co Ltd Ag-tin oxide-system electric contact material
JPS596903B2 (ja) * 1975-05-21 1984-02-15 タナカキキンゾクコウギヨウ カブシキガイシヤ 複合電気接点材料
US4141727A (en) * 1976-12-03 1979-02-27 Matsushita Electric Industrial Co., Ltd. Electrical contact material and method of making the same
DE2659012C3 (de) * 1976-12-27 1980-01-24 Siemens Ag, 1000 Berlin Und 8000 Muenchen Verfahren zum Herstellen eines Sinterkontaktwerkstoffes aus Silber und eingelagerten Metalloxiden
JPS608301B2 (ja) * 1977-01-21 1985-03-01 田中貴金属工業株式会社 Ａｇ−酸化物系複合接点材料の製造方法
JPS6018735B2 (ja) * 1977-12-15 1985-05-11 松下電器産業株式会社 電気接点材料
US4150982A (en) * 1978-03-13 1979-04-24 Chugai Denki Kogyo Kabushiki-Kaisha AG-Metal oxides electrical contact materials containing internally oxidized indium oxides and/or tin oxides
JPS6013051B2 (ja) * 1978-08-11 1985-04-04 中外電気工業株式会社 銀↓−錫↓−ビスマス系合金を内部酸化した電気接点材料の改良
JPS5543775A (en) * 1978-09-21 1980-03-27 Sumitomo Electric Industries Electric contact material and method of fabricating same
US4294616A (en) * 1979-01-02 1981-10-13 Gte Products Corporation Electrical contacts
GB2055398B (en) * 1979-08-01 1983-06-02 Chugai Electric Ind Co Ltd Electrical contact materials of internally oxidized ag-sn-bi alloy
JPS5760042A (en) * 1980-09-26 1982-04-10 Matsushita Electric Ind Co Ltd Electrical contact material
DE3102067A1 (de) * 1981-01-23 1982-08-19 Degussa Ag, 6000 Frankfurt Werkstoff fuer elektrische kontakte
JPS57134532A (en) * 1981-02-12 1982-08-19 Chugai Electric Ind Co Ltd Electrical contact material of silver-tin-bismuth alloy
DE3146972A1 (de) * 1981-11-26 1983-06-01 Siemens AG, 1000 Berlin und 8000 München Verfahren zum herstellen von formteilen aus cadmiumfreien silber-metalloxid-verbundwerkstoffen fuer elektrische kontaktstuecke
DE3305270A1 (de) * 1983-02-16 1984-08-16 Siemens AG, 1000 Berlin und 8000 München Sinterverbundwerkstoff fuer elektrische kontakte und verfahren zu seiner herstellung
EP0152606B1 (fr) * 1984-01-30 1987-09-09 Siemens Aktiengesellschaft Matériau de contact et procédé de préparation de pièces de contact

Also Published As

Publication number Publication date
ATE24628T1 (de) 1987-01-15
US4681702A (en) 1987-07-21
DE3304637A1 (de) 1984-08-16
ATE57789T1 (de) 1990-11-15
DE3461872D1 (en) 1987-02-05
EP0182386A2 (fr) 1986-05-28
EP0182386B1 (fr) 1990-10-24
DE3483479D1 (de) 1990-11-29
EP0118708A1 (fr) 1984-09-19
JPS59148215A (ja) 1984-08-24
JPH0377265B2 (fr) 1991-12-10
EP0182386A3 (en) 1987-01-14

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